Eyewitness Sam Taylor, who lives above the pub, told the BBC: "We looked out the window and saw a large gang of youths outside the pub.
"They started to fight amongst themselves, just play-fighting at first then getting a bit more serious. By the time we got outside one of the locals had been taken across the road and they were beating him up.
"They had BMXs, whacking him in the chest using stones [and] bricks and he was bleeding quite seriously from the head as well."
Mr Taylor, who is a St John Ambulance volunteer, added: "After administering him first aid I also heard there was another kiddy across the road who had been stabbed.
"But unfortunately, due to circumstances, I couldn't get over to him to help [due to the] sheer volume of children. When I did get through to him, they pushed me back, and back, and back.
"When I did finally get through they just weren't interested. After trying to stop the bleeding I just got thrown back. The kids were just hysterical."
Careful out there, folks.....